(19)
(11) EP 4 375 734 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
10.07.2024 Bulletin 2024/28

(43) Date of publication A2:
29.05.2024 Bulletin 2024/22

(21) Application number: 24161987.3

(22) Date of filing: 06.09.2022
(51) International Patent Classification (IPC): 
B29D 11/00(2006.01)
B41M 3/00(2006.01)
C09D 11/30(2014.01)
 G02C 7/10(2006.01)
C09D 11/12(2006.01)
G02C 7/02(2006.01)
(52) Cooperative Patent Classification (CPC):
B29D 11/00317; B29D 11/00903; B29D 11/00009; G02C 7/105; B29D 11/00923; C09D 11/12; B41M 3/003; C09D 11/30; G02C 7/021
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME
Designated Validation States:
KH MA MD TN

(30) Priority: 10.09.2021 EP 21195942

(62) Application number of the earlier application in accordance with Art. 76 EPC:
22773506.5 / 4370317

(71) Applicant: Carl Zeiss Vision International GmbH
73430 Aalen (DE)

(72) Inventors:
  • LAUNAY, Florian
    73434 Aalen (DE)
  • WIEDEMANN, Dominik
    73433 Aalen (DE)
  • WOLFF, Christian
    73433 Aalen (DE)

(74) Representative: PATERIS Patentanwälte PartmbB 
Danckelmannstraße 9
14059 Berlin
14059 Berlin (DE)

   


(54) METHOD FOR TINTING A SPECTACLE LENS SUBSTRATE AND SPECTACLE LENS SUBSTRATE


(57) A method 100 for tinting of a spectacle lens substrate 1. The method comprises the following steps: S1: providing a spectacle lens substrate 1 comprising a polymeric lens material 2, S2: providing a composition 3 comprising a polymeric carrier material 4, S3: applying a pattern 5 of the composition 3 on a surface 6 of the spectacle lens substrate 1, and S4: heating the spectacle lens substrate 1 to allow for diffusion of a dye substance 7 between the carrier material 4 and the lens material 2.
Moreover, a composition 3 for in-substrate tinting of a polymeric spectacle lens substrate 1, and a spectacle lens substrate 1 comprising a polymeric lens material 2 which exhibits a pattern 7 of a composition 3 comprising a polymeric carrier material 4 applied on a surface 6 of the spectacle lens substrate 1 are presented.







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